Family Paracoryphellidae Miller, 1971, reinstated

Diagnosis.

Body wide. Notal edge present, well-defined, continuous. Cerata not stalked, in continuous numerous rows. Rhinophores smooth to wrinkled. Anus pleuroproctic under the notal edge. No distinct oral glands. Radula formula 1.1.1. Asymmetrically placed additional 1-3 rows of small reduced lateral teeth may be present. Rachidian teeth with strong cusp, never compressed by adjacent lateral denticles. Lateral teeth narrow or with attenuated process basally, usually denticulated. Commonly only single distal receptaculum seminis present. Vas deferens always long, with wide granulated or tubular prostate. External permanent penial collar present in some taxa. Penis elongated conical, internal or fully external, unarmed.

Genera included.

Chlamylla Bergh, 1886, Paracoryphella Miller, 1971, Polaria gen. n., Ziminella gen. n.